Averages/Root mean square: Difference between revisions
Content added Content deleted
(New task and Python solution.) |
(→{{header|Python}}: make compatible with 2.x) |
||
Line 10: | Line 10: | ||
=={{header|Python}}== |
=={{header|Python}}== |
||
<lang Python>>>> from |
<lang Python>>>> from __future__ import division |
||
>>> from math import sqrt |
|||
>>> def qmean(num): |
>>> def qmean(num): |
||
return sqrt(sum(n*n for n in num)/len(num)) |
return sqrt(sum(n*n for n in num)/len(num)) |
Revision as of 08:09, 20 February 2010
Averages/Root mean square
You are encouraged to solve this task according to the task description, using any language you may know.
You are encouraged to solve this task according to the task description, using any language you may know.
Compute the Root mean square of the numbers 1..10.
The root mean square is also known by its initial RMS (or rms), and as the quadratic mean.
The RMS is calculated as the mean of the squares of the numbers, square-rooted:
C.f. Averages/Pythagorean means
Python
<lang Python>>>> from __future__ import division >>> from math import sqrt >>> def qmean(num): return sqrt(sum(n*n for n in num)/len(num))
>>> numbers = range(1,11) # 1..10 >>> qmean(numbers) 6.2048368229954285</lang>